<template>
    <el-container class="home-container">
        <!-- 头部区域 -->
     <el-header >
         <div>
             <img src="src\assets\header.png" alt="">
             <span>慧用劵后台管理系统</span>
         </div>
         <el-button type="info" @click="logout">退出</el-button>
     </el-header>
     <!-- 页面主体区域 -->
    <el-container>
     <!--侧边栏  -->
        <el-aside :width="isCollapse ? '64px':'200px'">
            <!-- 按钮伸缩条 -->
            <div class="toggle-button" @click="toggleCollapse">|||</div>
            <!-- 侧边栏菜单区域 -->
            <el-menu background-color="#333744"  text-color="#fff"
             active-text-color="#409EFF" :unique-opened="true" :collapse="isCollapse"
             :collapse-transition="false">
             <!-- 一级菜单 -->
      <el-submenu :index="item.id+''" v-for="item in  menulist" :key="item.id">
        <!-- 一级菜单的模板区 -->
        <template slot="title">
           <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
        <el-menu-item :index="subItem.id+''" v-for="subItem in item.children" :key="subItem.id"> <template slot="title">
           <!-- 图标 -->
          <i class="el-icon-ice-cream-menu"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>
        </template></el-menu-item>

      </el-submenu>
      
    </el-menu>
        </el-aside>
        <!-- 右侧内容主体 -->
        <el-main>Main</el-main>
    </el-container>
    </el-container>   
</template>

<script>
    export default { 
        data(){
            return{
                //左侧菜单数据
                menulist:[],
                iconsObj:{
                    // 更改标签图片
                    '1':'iconfont icon-user',
                    '2':'iconfont icon-user',
                    '3':'iconfont icon-user',
                    '4':'iconfont icon-user'
                },
                //是否折叠
                isCollapse:false,
            }
        },
        created(){
            this. getMenulist();
        },
        methods:{
            logout(){
                window.sessionStorage.clear()
                this.$router.push("/login")
            },
            //获取所有的菜单
          async  getMenulist(){
               const{data:res}=await this.$http.get('menus')
               if(res.meta.status!==200)return this.$message.error(res.meta.msg)
               this.menulist= res.data
               console.log(res);
            },
            //点击按钮,切换菜单的折叠与展开
            toggleCollapse(){
                this.isCollapse=!this.isCollapse
            },
        }
      };
</script>

<style lang="less" scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content:space-between;
    padding-left:0;
    align-items:center;
    color: #ffff;
    font-size:20px;
    >div{
        display: flex;
    }

}
.el-aside{
    background-color: #333744;
    .el-menu{
        border-right: none;
    }
}
.el-main{
    background-color:#eaedf1
}
.iconfont{
    margin-right: 10px;
}
.toggle-button{
    background-color: #4a5064;
    font-size:10px;
    line-height: 24px;
    color:#fff;
    text-align: center;
    letter-spacing:0.2em;
    cursor: pointer;
}
</style>